Flexitherm™ is an automatic pasteurization machine for beer pasteurization. Flexitherm™ uses a pasteurization method that eliminates microbiological spoilage, achieves the right pasteurization temperature and preserves the quality and shelf life of beer and other carbonated drinks over a variable flow range. This pasteurization method is tailored to provide optimal, efficient thermal treatment of beer to be sent to aseptic filling systems.

Flexitherm - Plate heat exchanger for beer pasteurization

Reduce microbiological spoilage and preserve beer quality

  • Reliable pasteurization units (PU) control system for stable product treatment (PU variations within +/- 10% of target level during constant operation
  • Minimum site work as the module is self-contained and pre-assembled with automatic control
  • Designed for CIP, the sanitary and compact module requires low maintenance, minimizing downtime
  • Effective energy recovery up to 95%
  • State-of-the-art automated control system featuring process continuously refined control refinements
Using the Flexitherm™ module for pasteurization of beer ensures a low hold-up volume in the PHE for minimum beer loss. Low water and energy consumption save further on beer, while the glue free clip-on gaskets save on time and resources. The well-structured PLC software is easily integrated into an automated control system.




This beer pasteurization equipment is ideal for high capacity brewer processing. It cuts operation costs by recovering up to 95% of heat*.


Approximate dimensions and weight depending on capacity range:

For capacity = 40hl/h,
Dimensions (LxWxH): 3.2m x 2.0m x 2.2m

For capacity = 400hl/h,
Dimensions (LxWxH): 4.0m x 3.6m x 2.6m

*Compared to a traditional tunnel pasteurizer, it improves overall water consumption by up to 0.42hl/hl, and improves the energy usage ratio by 5MJ/hl.

Flexitherm beer pasteurization wireframe

Flexitherm™ Mini

Flexitherm Mini.jpg


Designed especially for craft brewers, Flexitherm™ Mini lets you save several recipes in the same unit with individual settings for different craft beers. 


Capacity: 5-50 hl/h (3 different modules)
Dimensions (LxWxH): 4,000 x 2,000 x 2,000 mm


View the 3D/VR model here

Flexitherm mini beer pasteurization wireframe

Alfa Laval Plate Heat Exchanger for beer pasterurization 

The Flexitherm plate heat exchanger (PHE) beer pasteurizer system is used for eliminating or reducing the number of live micro-organisms in the product with the aim of improving microbiological stability and to increase shelf life of the product. The required heat treatment is achieved through a combination of temperature and holding time.

In the PHE, the cold, unpasteurized beer is heated to the pasteurization temperature in two steps.

Depending on selected configuration, the flow through the FLEXITHERM module can continuously be adjusted to cater for variation in filling machine demand. The Flexitherm module is fully automated with a PLC system controlling the plant operation.

Process chart for pasteurization of beer

Learn More

Read our product brochure to learn more about this product's application, working principle, benefits and technical details.

Alfa Laval Brewery Solutions